The Harpe Brothers were America's first recorded serial killers and their murders are proof that serial killing didn't get off to a slow start.

The USS Lexington was sunk during a battle with the Japanse Navy during WWII. Now, after missing for 76 years, a team of explorers has discovered it.

Annie Besant started out married to a clergyman, but became an anti-religious activist. Her arrest for publishing a book that dealt with birth control only catapulted her fame.

Following the liberation of the Dachau concentration camp, American troops felt an urge to personally punish the camp's guards. What exactly transpired still isn't known.

New research shows that what was previously thought of simply as dark smudges on 5,000-year-old mummies are actually the world's oldest tattoos.

William Cooper has often been called the father of conspiracy theories. He covered it all: the JFK assassination, the AIDS epidemic, and the extraterrestrial threat he thought was going to bring America to its knees.

Glenn Miller was a renowned bandleader during the swing era. Then he played for the allied troops in WWII. Then he vanished.

Timothy Cunningham went home sick from his job at the Center for Disease Control and Prevention in Atlanta on Feb. 12, 2018. He's now been missing for two weeks.

Sir Thomas More was a devout Catholic and a civil servant to King Henry in the sixteenth century. And during that time, it was hard to be all those things and not get beheaded.

While many leaders in Germany were in favor of Operation Sea Lion, Hitler was initially against it. Only when Britain rejected to surrender did he demand prompt escalation.

"By identifying the vast majority of high-risk viruses that have not yet emerged, we’ll be able to design new strategies to reduce the risk of future pandemics."